Steps

1

First off, find a car that can withstand much damage because you're going to fall one way or another.

A great example would be the Taxi.

2

Second, find any apartment that has a small park usually South Bohan and North Holland have the best ones to do this but you could also try the ones at Firefly Projects in Broker if your new to this game.

3

Drive your car and park it near the legs of the swing and keep accelerating backwards, the direction your facing is the way you will be catapulted from also make sure your close to the leg as you can or it won't work.

If you did this correctly, the car will have conflicts with the swing, e.g shimmying, moving and the game will tell the swing to forcefully push the car out the way as it is attached to the ground

4

Enjoy, If you did this correctly then you will be flying through the air in the car, hopefully not plunging into a building.